Jacob Petersen Chaffee, MD
Family Medicine Physician · Grand Coulee, WA
Jacob Petersen Chaffee, MD is a family medicine physician with a practice address in Grand Coulee, Washington, and NPI 1811983562, issued on Sep 27, 2005. Check the license (Washington MD00042597, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Jacob Petersen Chaffee
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD00042597 WA
Self-reported in NPPES; status is on the state search - Practice location
- 411 Fortuyn RD, Grand Coulee, WA 99133
- Phone
- (509) 633-1753
- Enumerated
- Sep 27, 2005
- Record last updated
- Mar 14, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (509) 633-1933
- Medicaid ID
- 1019674 WA
- Medicare enrollment
- Enrolled (PECOS I20041201000991); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2001
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 5,534 in Washington → Look up another NPI →
Also registered at 411 Fortuyn RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Brown, CRNACertified Registered Nurse Anesthetist1205838703
- Samantha Brunner, PA-CPhysician Assistant1639451750
- Andrew Castrodale, MDFamily Medicine Physician1689661712
- Kathleen Cohen, D.O.Family Medicine Physician1922489343
- Charlene Desautel, PTPhysical Therapist1881936052
- Karie Fields, LSWAICSocial Worker1700685039
Verify Jacob Petersen Chaffee in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00042597Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
49 Medicare Part D claims for 34 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 97.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Douglas, Grant, Lincoln And Okanogan Counties Public Hospital DistrictGrand Coulee, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jacob Petersen Chaffee among 5,534 family medicine physician records in Washington
Jacob Petersen Chaffee, MD is one of 5,534 family medicine physician records with a practice address in Washington. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2001 · median 2009 among the 3,294 with a school on file
- Record last updated2018 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 family medicine physician records list a practice address in Grand Coulee
They are 7 of the 50 NPPES records with a practice address in Grand Coulee, and 5,534 family medicine physician records in Washington.
All 5,534 in Washington → Every provider in Grand Coulee → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Andrew Castrodale, MDGrand Coulee, WA 991331689661712
- Kathleen Cohen, D.O.Grand Coulee, WA 991331922489343
- Phoebe HughesGrand Coulee, WA 991331548848021
- Jennifer Knox, MDGrand Coulee, WA 991331134516933
- Roy Myers, M.D.Grand Coulee, WA 991331275572521
- Charles Randolph, MDGrand Coulee, WA 991331760040281
- Maria Trevino, MDInchelium, WA 991381528174372
- Rodolfo Trevino, MDInchelium, WA 991381922114537
Common questions
What is Jacob Petersen Chaffee, MD's NPI number?
Jacob Petersen Chaffee, MD's National Provider Identifier (NPI) is 1811983562, issued on Sep 27, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Jacob Petersen Chaffee, MD located?
The NPPES record lists a practice address at 411 Fortuyn RD, Grand Coulee, WA, 99133. Phone: (509) 633-1753. Providers update this record themselves, so call before visiting.
How can I verify Jacob Petersen Chaffee, MD's license?
NPPES lists Washington license number MD00042597, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jacob Petersen Chaffee, MD prescribe under Medicare Part D?
In 2024, Jacob Petersen Chaffee, MD had 49 Medicare Part D claims for 34 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Jacob Petersen Chaffee, MD's MIPS final score?
The 2023 MIPS final score is 97.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.